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Improvement in Bleaching Apparatus; No, HQ,503 Patented'0ct.3, 1871.-

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Wg /7 I//W\Vu UNITED STATES PATENT OFFICE.

v BENJAMIN G. BROOKS, OF MANCHESTER, NEW HAMPSHIRE.

IMPROVEMENT IN APPARATUS FUR DISCHARGING EXTRANEUUS CULURING-MATTERS, 86C., FROM PRINTED FABRICS.

Specification forming part of Letters Patent No. 119,503, dated October 3, 1871.

To all whom it may concern:

Be it known that I, BENJAMIN G. BROOKS, of Manchester, in the county of Hillsborough and State of New Hampshire, hc ve invented certain Improvements in Discharging Extraneous Ooloring from Printed Fabrics, of Which the following is a specification:

The nature and object of the invention relates to the manner Of discharging superiuous or extraneous color or other impurities from printed fabrics by causing the fabric, after it has passed through the chlorinebath in the Ordinary mode of bleaching, or the equivalent bleaching process, to pass into a box Wholly or partially closed, and therein stretching it in one or more thicknesses in a continuous line over a series of rollers, and When thus stretched subjecting it to the direct action or blast of a succession of jets of highpressure steam on one or other or both sides of the fabric, either alternately or at the same time, from a series of perforated steam-pipes or their equivalents; the steam jets being so arranged and at such distances from the line of stretched fabric that the jets of high-pressure steam shall be driven from the perforation sin the steam-pipes or other means of conveying it directly against the surface of and through the fabric, the fabric being moved in a regular an'd even manner over the rollers and 4near the steam jets, so that each part of the fabric is acted upon by the steam jets; the fabric being retained in the box or steam-chest with the discharged steam long enough to thoroughly remove, by means of the steam jets and the steam inclosed in the box or steam-chest, all the chlorine or any extraneous coloring from the fabric; and thence the fabric passes into a cold-Water bath, and is then further manipulated in any ofthe Well-known modes.

The advantages gained by this mode of operation are, that all extraneous matters or colors left in the fabric in the preceding processes are more fully discharged, and the action ofthe steam is to raise or brighten the colors intended to be permanent in the fabric, and at the same time gives a clearer and better White in the portions of the fabric intended to be unacted upon inthe printing or dyeing process; the effect of the use of chlorine being to iiatten the colors, While by using high-pressure ysteam One-half of the amount of chlorine usually employed can be saved, and its injurious effects on the colors intended to remain iixed in the fabric is in a great measure prevented.

The operation of this process is shown in the annexed drawing, in which Figure 1 represents a plan of the interior of the box or steam-chest in Which the fabric is acted upon by the steam. Fig. 2 is aperpendicular section, through the box or steam-chest, on the line O R.

The same letters refer to corresponding parts in the drawing.

A A is the outside of the closed box or steamchest. B B is the line of cloth stretched over the rollers 'C C, and moving in the direction shown by the arrows from the chlorine bath F to the cold-Water bath D. P P are perforated steampipes, through the perforations a a of Which the steam passes, as shown at E E, against and through the stretched fabric, thereby discharging the extraneous coloring or other impurities, heightening the colors intended to remain, and cleaning and brightening the White or uncolored portion of the fabric as each part of the line of the fabric is successively brought over and under the perforations a a and the jets of steam issuing therefrom. j

What I claim as my invention, and desire to secure by Letters Patent, is-

The process of discharging extraneous coloring and other impurities from printed or dyed fabric by the action of jets of high-pressure steam driven against and through the fabric, When so stretched that the jets may operate against one or the other or both sides of the fabric from perforated steam-pipes or their equivalents, substantially in the manner and for the purposes herein set forth.

BENJ. G. BROOKS.

Witnesses:

WATERMAN SMITH, J. S. SHANNON. 

